.. PRTG Manual: Notifications

PRTG uses notifications to send you alerts whenever PRTG discovers a defined status, such as slow or failing sensors, or when channels breach threshold values. You can define an unlimited number of notifications using one, or more, of several notification methods like email, text messaging, push notifications to Android and iOS devices, and many more. PRTG sends notifications to the desired user's notification contacts that you can define for each user account.

Usually, there are three successive attempts to deliver a notification. If all of these attempts fail, the notification is lost. To never miss a notification, we recommend that you always add two different ways to get a notification. For example, use the latency setting of a state trigger to choose a notification with a different delivery method than in the first trigger condition, or set up a second trigger with a different notification for the corresponding object.

We recommend that you always set up at least two notifications with different delivery methods for a notification trigger, for example, one email notification and one SMS notification. If delivery via email fails (because of an email server outage or for other reasons), PRTG can still notify you via your smartphone in this case as a fallback. You can achieve this, for example, by using the latency setting in a state trigger and selecting a notification with a different delivery method than for the first trigger condition.